A shopkeeper buys a number of books fkr rs.1200. If he had bought 10 more books for same,each book would cost him 20rs. less. How many books did he buy?
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Answer:
Books. Price
x books. rs 1200
10 books. rs 200 (10x20)
x books x 200
---------------------------
10 x 1200
Therefore , he buy 60 books .
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